This is a master Tetrahedron but not in true tetrahedral shape but in shape of a Reuleaux tetrahedron. Although it could be made from a Master Skewb it was not. By the time this puzzle was made Master Skewb were not mass produced. Therefore the inventor had to be designed from scratch by Andrew Cormier and Adam Cowan.

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Contributors

Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.